CN113447294A - Be applied to automatic harvesting device of marine pollutant sampling - Google Patents
Be applied to automatic harvesting device of marine pollutant sampling Download PDFInfo
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- CN113447294A CN113447294A CN202110623602.2A CN202110623602A CN113447294A CN 113447294 A CN113447294 A CN 113447294A CN 202110623602 A CN202110623602 A CN 202110623602A CN 113447294 A CN113447294 A CN 113447294A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
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Abstract
The invention discloses an automatic collecting device applied to marine pollutant sampling, which comprises a shell: the fixed blocks are fixedly connected to two sides of the shell; a placement groove provided at one side of the housing; the driving structure is arranged on the placing groove; the push plate is connected to the shell in a sliding manner; the outer surface of the collecting vessel is in shaft connection with one end of the push plate; the fixing plate is fixedly connected to the upper surface of the collecting vessel; the first connecting plate is fixedly connected to the outer surface of the shell. This be applied to automatic harvesting device of marine pollutant sampling can pile up marine pollutant through placing on the sea, can pass through starter motor after a period to the realization is salvaged the purpose of collecting automatically to marine pollutant, can avoid the loaded down with trivial details of artifical salvage and increase the problem of the security of marine pollutant salvage.
Description
Technical Field
The invention relates to the technical field of marine pollutant sampling, in particular to an automatic collecting device applied to marine pollutant sampling.
Background
With the development of world industry, people have increasingly increased environmental pollution, wherein marine pollution is an important part of environmental pollution, and generally means that human beings change the original state of the sea, so that the marine ecosystem is damaged, the marine pollution can damage biological resources, harm human health, and prevent fishing and other activities of human beings on the sea, so that the quality of sea water and the quality of environment are damaged.
In order to analyze the cause of marine pollution, the recorded sampling of the pollutants on the sea is generally needed, and the existing sampling mode is generally manual sampling, but the manual sampling has the following problems:
1. in the process of manual sampling, because the ocean area is wide, the sampling process is long, and long sampling time is consumed;
2. when marine pollutants are found, the marine pollutants generally need to be manually salvaged and sampled, so that certain dangerousness exists.
Disclosure of Invention
The invention aims to provide an automatic collecting device applied to marine pollutant sampling, and aims to solve the problem that the existing marine pollutant sampling is inconvenient in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an automatic harvesting device for sampling marine pollutants, comprising a housing:
the fixed blocks are fixedly connected to two sides of the shell;
a placement groove provided at one side of the housing;
the driving structure is arranged on the placing groove;
the push plate is connected to the shell in a sliding manner;
the outer surface of the collecting vessel is in shaft connection with one end of the push plate;
the fixing plate is fixedly connected to the upper surface of the collecting vessel;
the first connecting plate is fixedly connected to the outer surface of the shell;
a placement frame slidably attached to an outer surface of the housing;
the sliding groove is arranged on one side of the placing frame;
the outer surface of the second connecting plate is movably connected inside the fixed plate in a nested manner;
the partition plate is fixedly connected to the outer surface of the second connecting plate and is connected to the inside of the fixing plate in a sliding mode;
one end of the second spring is fixedly connected inside the fixing plate, and the other end of the second spring is fixedly connected to the outer surface of the partition plate;
the second lug is fixedly connected to two sides of the second connecting plate and is connected to the sliding groove in a sliding manner;
the collecting frame is connected to the placing frame in a sliding mode;
the fixing structure is fixedly connected to the outer surface of the collecting frame;
a handle connected to the fixed structure;
the interception plate is fixedly connected to the outer surface of the shell;
by adopting the technical scheme, the offshore pollutants can be conveniently salvaged and collected.
As a preferred embodiment of the present invention, the driving structure includes:
the motor is fixedly connected to the placing groove;
one end of the screw rod is fixedly connected to the shaft end of the motor, and the other end of the screw rod is connected to the placing groove in a shaft mode;
the moving block is in threaded connection with the outer surface of the lead screw;
the supporting wheel shaft is connected to the moving block, and the outer surface of the supporting wheel is connected to the placing groove in a rolling mode;
one end of the connecting rod is connected to the outer surface of the moving block in a shaft mode;
one end of the connecting block is connected to the connecting rod in a shaft mode, and the connecting block is connected to the outer surface of the push plate in a sliding mode;
adopt above-mentioned technical scheme can, can be convenient for jack-up the push pedal through the drive structure to drive the jack-up of collection ware, thereby be convenient for salvage.
As a preferred technical scheme of the invention, the outer surface of the screw rod is in threaded connection with 2 moving blocks, and the screwing directions of threads on the 2 moving blocks are opposite;
by adopting the technical scheme, the moving block can move towards different directions when the screw rod rotates.
As a preferable technical solution of the present invention, the connecting rods are cross-connected, the cross shape of the connecting rods is an "X" -shaped structure, the top ends of the connecting rods are connected with each other by a shaft, one end of the connected end of the connecting rods is connected to the moving block by a shaft, and the other end of the connected end of the connecting rods is connected to the top end of the connecting block by a shaft;
adopt above-mentioned technical scheme can, can be convenient for improve the vertical height that the push pedal removed.
As a preferred technical solution of the present invention, the push plate is provided with a stabilizing structure, and the stabilizing structure includes:
the first lug is connected to the push plate in a sliding manner;
one end of the first spring is fixedly connected to the outer surface of the first bump, and the other end of the first spring is fixedly connected to the push plate;
the driving plate is connected to the push plate in a sliding mode and fixedly connected to the first protruding block;
the transmission gear shaft is connected to the push plate and is meshed with the transmission plate;
the first clamping rod is connected to the push plate in a sliding mode;
adopt above-mentioned technical scheme can, can be convenient for guarantee that the push pedal can remain stable to the in-process that the collection dish risees.
As a preferred technical scheme of the invention, the structure shape of the transmission plate is a U-shaped structure, racks are arranged on two sides inside the transmission plate, and the racks are meshed with the transmission gear;
by adopting the technical scheme, the transmission between the transmission plate and the transmission gear can be conveniently ensured.
As a preferred technical scheme of the invention, a clamping groove is arranged on one side of the collecting vessel, the position of the clamping groove corresponds to the position of a first clamping rod, racks are arranged on two sides of the first clamping rod, and the racks are meshed with the transmission gear;
adopt above-mentioned technical scheme can, the block that first kelly can be stable of being convenient for can be in the draw-in groove on the fixed plate.
As a preferable aspect of the present invention, the fixing structure includes:
the fixing frame is fixedly connected to the upper surface of the collecting frame;
the transmission shaft is connected to the fixed frame in a shaft mode;
the main gear is in key connection with the outer surface of the transmission shaft penetrating through the fixed frame;
a slave gear connected to an inside of the fixed frame and engaged with the master gear;
the sliding plate is slidably connected inside the fixed frame and is in meshed connection with the slave gear;
one end of the telescopic rod is fixedly connected to the outer surface of the sliding plate, and one end of the telescopic rod is fixedly connected to the inside of the fixed frame;
the third spring is movably connected to the outer surface of the telescopic rod in a nested manner;
one end of the second clamping rod is fixedly connected to the outer surface of the sliding plate;
adopt above-mentioned technical scheme can, can be convenient for pull up the collection frame.
As a preferred technical scheme of the invention, a clamping groove is arranged on the placing frame, and the position of the clamping groove corresponds to the position of the second clamping rod;
adopt above-mentioned technical scheme can, can be convenient for guarantee to place the block that the frame can be stable on collecting the frame.
As a preferred technical scheme, the lower end of the interception plate is provided with strip-shaped holes which are equidistantly distributed on the interception plate;
by adopting the technical scheme, the normal flow of seawater can be conveniently ensured.
Compared with the prior art, the invention has the beneficial effects that: this be applied to automatic harvesting device of marine pollutant sampling can pile up marine pollutant through placing on the sea, can pass through starter motor after a period to the realization is salvaged the purpose of collecting automatically to marine pollutant, can avoid the loaded down with trivial details of artifical salvage and increase the problem of the security that marine pollutant was salvaged:
1. through the arrangement of the interception plate, pollutants can be conveyed to the position between the inner side of the shell and the interception plate through the flow of seawater and intercepted by the interception plate, and the seawater can flow away from the strip-shaped holes on the interception plate, so that the accumulation of the pollutants can be realized, more pollutants can be salvaged at one time when the pollutants are salvaged, and the energy is saved;
2. the lead screw is driven to rotate through the rotation of the motor, so that the moving block can slide on the surface of the lead screw, the vertical length of the connecting rod can be increased, the push plate can be pushed up through the connecting rod, the collecting vessel is pulled up through the push plate, and after the collecting vessel is exposed out of the water surface, pollutants can be collected into the vessel, so that the pollutants can be salvaged;
3. the collecting vessel can be stably lifted when the pushing plate pulls the collecting vessel through the clamping of the first clamping rod in the fixing plate, so that the collecting vessel can be prevented from rotating, the first lug is extruded through the first connecting plate when one end of the fixing plate moves to the top end of the sliding groove, the first lug starts to contract and drives the transmission plate to synchronously move, and the first clamping rod can contract through transmission of the transmission gear, so that the collecting vessel can rotate, pollutants in the collecting vessel can be poured into the placing frame, and the pollutants can be collected;
4. the second clamping rod is clamped in the placing frame, elastic acting force of the third spring is used for ensuring that the collecting frame can be stably fixed in the placing frame, the transmission shaft can drive the main gear to rotate by rotating the handle, the sliding plate can be contracted by transmission from the gear, and the second clamping rod is not clamped in the placing frame, so that the collecting frame can be taken down and pollutants can be collected conveniently.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic cross-sectional view taken from the left side of A-A in FIG. 2 according to the present invention;
FIG. 4 is a schematic cross-sectional view of the main plane B-B of FIG. 2 according to the present invention;
FIG. 5 is an enlarged view of point C of FIG. 4 according to the present invention;
FIG. 6 is an enlarged view of point D in FIG. 4 according to the present invention;
FIG. 7 is a right view of the structure of the present invention.
In the figure: 1. a housing; 2. a fixed block; 3. a placement groove; 4. a drive structure; 401. a motor; 402. a screw rod; 403. a moving block; 404. a support wheel; 405. a connecting rod; 406. connecting blocks; 5. pushing the plate; 6. a collection vessel; 7. a fixing plate; 8. a first connecting plate; 9. stabilizing the structure; 901. a first bump; 902. a first spring; 903. a drive plate; 904. a transmission gear; 905. a first clamping rod; 10. placing the frame; 11. a chute; 12. a second connecting plate; 13. a partition plate; 14. a second spring; 15. a second bump; 16. a collection frame; 17. a fixed structure; 1701. a fixing frame; 1702. a drive shaft; 1703. a main gear; 1704. a slave gear; 1705. a slide plate; 1706. a telescopic rod; 1707. a third spring; 1708. a second clamping rod; 18. a grip; 19. a interception plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: an automatic harvesting device applied to marine pollutant sampling comprises a shell 1:
the fixed block 2 is fixedly connected to two sides of the shell 1; a placing groove 3, wherein the placing groove 3 is arranged on one side of the shell 1; the driving structure 4 is arranged on the placing groove 3; the push plate 5 is connected to the shell 1 in a sliding manner; the drive structure 4 includes: the motor 401 is fixedly connected to the placing groove 3; one end of the screw rod 402 is fixedly connected to the shaft end of the motor 401, and the other end of the screw rod 402 is connected to the placing groove 3; a moving block 403, wherein the moving block 403 is in threaded connection with the outer surface of the lead screw 402; the supporting wheel 404 is connected to the moving block 403 through a shaft, and the outer surface of the supporting wheel 404 is connected to the placing groove 3 in a rolling manner; a connecting rod 405, wherein one end of the connecting rod 405 is connected with the outer surface of the moving block 403 in a shaft mode; one end of the connecting block 406 is connected to the connecting rod 405 in a shaft mode, and the connecting block 406 is connected to the outer surface of the push plate 5 in a sliding mode; the outer surface of the screw rod 402 is connected with 2 moving blocks 403 through threads, and the rotating directions of the threads on the 2 moving blocks 403 are opposite; the connecting rods 405 are connected in a cross mode, the connecting rods 405 are in an X-shaped structure in a cross mode, the top ends of the connecting rods 405 are mutually connected in a shaft mode, one end of the connected end portion of the connecting rods 405 is connected to the moving block 403 in a shaft mode, and the other end of the connected end portion of the connecting rods 405 is connected to the top end of the connecting block 406 in a shaft mode;
as shown in fig. 4, by starting the motor 401, the shaft end at the top end of the motor 401 can drive the screw rod 402 to rotate, in the rotating process, the moving block 403 which is in threaded connection with the screw rod 402 starts to slide on the surface of the screw rod 402, so that the moving block 403 starts to push the lower end of the connecting rod 405, and the lower end of the connecting rod 405 can gradually approach, so that the connecting rod 405 starts to rotate around the crossed shaft point between the connecting rods 405, so that the vertical length of the connecting rod 405 is increased, and the push plate 5 starts to be jacked up;
the outer surface of the collecting vessel 6 is axially connected with one end of a push plate 5; the fixing plate 7 is fixedly connected to the upper surface of the collecting vessel 6; the first connecting plate 8, the first connecting plate 8 is fixedly connected to the external surface of the outer casing 1; be provided with stable structure 9 on push pedal 5, and stable structure 9 includes: the first bump 901, the first bump 901 is connected to the push plate 5 in a sliding way; one end of the first spring 902 is fixedly connected to the outer surface of the first bump 901, and the other end of the first spring 902 is fixedly connected to the push plate 5; the driving plate 903, the driving plate 903 is connected to the push plate 5 in a sliding manner, and the driving plate 903 is fixedly connected to the first bump 901; the transmission gear 904 is connected to the push plate 5 in a shaft mode, and the transmission gear 904 is connected with the transmission plate 903 in a meshed mode; the first clamping rod 905 is connected to the push plate 5 in a sliding mode; a clamping groove is formed in one side of the collecting vessel 6, the position of the clamping groove corresponds to that of the first clamping rod 905, racks are arranged on two sides of the first clamping rod 905, and the racks are meshed with the transmission gear 904; a placing frame 10, wherein the placing frame 10 is connected to the outer surface of the shell 1 in a sliding way; the sliding chute 11 is arranged at one side of the placing frame 10; the outer surface of the second connecting plate 12 is movably connected inside the fixed plate 7 in a nested manner; the partition plate 13 is fixedly connected to the outer surface of the second connecting plate 12, and the partition plate 13 is slidably connected to the inside of the fixing plate 7; one end of the second spring 14 is fixedly connected inside the fixing plate 7, and the other end of the second spring 14 is fixedly connected on the outer surface of the partition plate 13; the second bump 15 is fixedly connected to two sides of the second connecting plate 12, and the second bump 15 is connected to the sliding groove 11 in a sliding manner;
as shown in fig. 4, 5 and 6, in the process that the push plate 5 rises, the push plate 5 will drive the collection dish 6 to rise, and the first clamping rod 905 will fix the fixing plate 7 during rising, so as to ensure that the second protrusion 15 fixed at the other end of the fixing plate 7 slides stably in the sliding slot 11 on the placing frame 10, thereby ensuring that the collection dish 6 can rise stably;
when the second bump 15 at the top end of the fixing plate 7 moves to the top end of the sliding chute 11, the first bump 901 starts to be pressed by the first connecting plate 8, so that the first bump 901 starts to move to the right side in the push plate 5, and in the process of moving the first bump 901, the first bump 901 pulls the transmission plate 903 to move to the right side, so that the transmission plate 903 drives the transmission gear 904 to rotate in meshing with the transmission gear 904, and the transmission gear 904 drives the first clamping rod 905 to move, so that the first clamping rod 905 starts to move to the left side, and the first clamping rod 905 is not clamped with the collecting dish 6 any more;
the collecting frame 16, the collecting frame 16 is connected with the placing frame 10 in a sliding way;
with the continuous rising of the push plate 5, when the collecting dish 6 is exposed out of the water surface, pollutants on the surface are collected into the collecting dish 6, and then the collecting dish 6 and the fixing plate 7 start to rotate around the push plate 5, the end point on the collecting dish 6 and the top end of the sliding chute 11, so that the pollutants in the collecting dish 6 can be poured into the collecting frame 16;
the fixed structure 17 is fixedly connected to the outer surface of the collecting frame 16; the fixing structure 17 includes: a fixing frame 1701 fixedly coupled to an upper surface of the collecting frame 16; a transmission shaft 1702, the transmission shaft 1702 being shaft-connected to the fixed frame 1701; a main gear 1703, the main gear 1703 being keyed on the outer surface of the drive shaft 1702 penetrating inside the fixed frame 1701; a slave gear 1704, which is connected to the inside of the fixed frame 1701 from the gear 1704 and is in mesh with a master gear 1703 from the gear 1704; a slide plate 1705, the slide plate 1705 is slidably connected inside the fixed frame 1701, and the slide plate 1705 is engaged with the slave gear 1704; one end of the telescopic rod 1706 is fixedly connected to the outer surface of the sliding plate 1705, and one end of the telescopic rod 1706 is fixedly connected to the inside of the fixing frame 1701; the third spring 1707, the third spring 1707 is movably nested and connected on the outer surface of the telescopic rod 1706; one end of the second catch bar 1708 is fixedly connected to the outer surface of the sliding plate 1705; a clamping groove is formed in the placing frame 10, and the position of the clamping groove corresponds to the position of the second clamping rod 1708; a handle 18, the handle 18 is connected with the fixed structure 17;
as shown in fig. 2 and 3, after the collection frame 16 finishes collecting the pollutants, the handle 18 is pulled, so that the handle 18 starts to rotate the transmission shaft 1702, the transmission shaft 1702 pulls the main gear 1703 to rotate during the rotation, the sliding plate 1705 starts to slide in the fixed frame 1701 through the transmission from the gear 1704, and the second clamping rod 1708 is pulled to contract, so that the second clamping rod 1708 is unlocked from the placing frame 10, and the handle 18 can be held to pull out the collection frame 16 to finish collecting the pollutants at sea;
the interception plate 19 is fixedly connected to the outer surface of the shell 1; the lower end of the interception plate 19 is provided with strip-shaped holes which are equidistantly distributed on the interception plate 19;
by placing the device on the surface of the sea, the contaminants can be intercepted by the flow of the sea, which is not described in detail in this specification, by the flow of the sea, which is brought to the interception plate 19 with the sea.
It is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and are not to be considered limiting of the scope of the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an automatic harvesting device for marine pollutant sampling which includes the shell, its characterized in that:
the fixed blocks are fixedly connected to two sides of the shell;
a placement groove provided at one side of the housing;
the driving structure is arranged on the placing groove;
the push plate is connected to the shell in a sliding manner;
the outer surface of the collecting vessel is in shaft connection with one end of the push plate;
the fixing plate is fixedly connected to the upper surface of the collecting vessel;
the first connecting plate is fixedly connected to the outer surface of the shell;
a placement frame slidably attached to an outer surface of the housing;
the sliding groove is arranged on one side of the placing frame;
the outer surface of the second connecting plate is movably connected inside the fixed plate in a nested manner;
the partition plate is fixedly connected to the outer surface of the second connecting plate and is connected to the inside of the fixing plate in a sliding mode;
one end of the second spring is fixedly connected inside the fixing plate, and the other end of the second spring is fixedly connected to the outer surface of the partition plate;
the second lug is fixedly connected to two sides of the second connecting plate and is connected to the sliding groove in a sliding manner;
the collecting frame is connected to the placing frame in a sliding mode;
the fixing structure is fixedly connected to the outer surface of the collecting frame;
a handle connected to the fixed structure;
and the interception plate is fixedly connected to the outer surface of the shell.
2. The automated harvesting device for offshore contaminant sampling according to claim 1, wherein: the driving structure includes:
the motor is fixedly connected to the placing groove;
one end of the screw rod is fixedly connected to the shaft end of the motor, and the other end of the screw rod is connected to the placing groove in a shaft mode;
the moving block is in threaded connection with the outer surface of the lead screw;
the supporting wheel shaft is connected to the moving block, and the outer surface of the supporting wheel is connected to the placing groove in a rolling mode;
one end of the connecting rod is connected to the outer surface of the moving block in a shaft mode;
the connecting rod, the one end hub connection of connecting block is in on the connecting rod, just connecting block sliding connection be in the surface of push pedal.
3. An automated harvesting device for offshore contaminant sampling according to claim 2, wherein: the outer surface threaded connection of lead screw has 2 movable blocks, and the direction of rotation of screw thread is opposite on 2 movable blocks.
4. An automated harvesting device for offshore contaminant sampling according to claim 2, wherein: the connecting rods are connected in a cross mode, the connecting rods are in an X-shaped structure in a cross mode, the top ends of the connecting rods are mutually connected in a shaft mode, one end of the end portion, connected with the connecting rods, of the connecting rod is connected to the moving block in a shaft mode, and the other end of the end portion, connected with the connecting rods, of the connecting rod is connected to the top end of the connecting block in a shaft mode.
5. The automated harvesting device for offshore contaminant sampling according to claim 1, wherein: be provided with stable structure in the push pedal, and stable structure includes:
the first lug is connected to the push plate in a sliding manner;
one end of the first spring is fixedly connected to the outer surface of the first bump, and the other end of the first spring is fixedly connected to the push plate;
the driving plate is connected to the push plate in a sliding mode and fixedly connected to the first protruding block;
the transmission gear shaft is connected to the push plate and is meshed with the transmission plate;
the first clamping rod is connected to the push plate in a sliding mode.
6. An automated harvesting device for offshore contaminant sampling according to claim 5, wherein: the structure shape of driving plate is "U" type structure, just the inside both sides of driving plate set up the rack, and the rack is connected with the drive gear meshing.
7. An automated harvesting device for offshore contaminant sampling according to claim 5, wherein: and a clamping groove is formed in one side of the collecting vessel, the position of the clamping groove corresponds to that of the first clamping rod, racks are arranged on two sides of the first clamping rod, and the racks are meshed and connected with the transmission gear.
8. The automated harvesting device for offshore contaminant sampling according to claim 1, wherein: the fixing structure includes:
the fixing frame is fixedly connected to the upper surface of the collecting frame;
the transmission shaft is connected to the fixed frame in a shaft mode;
the main gear is in key connection with the outer surface of the transmission shaft penetrating through the fixed frame;
a slave gear connected to an inside of the fixed frame and engaged with the master gear;
the sliding plate is slidably connected inside the fixed frame and is in meshed connection with the slave gear;
one end of the telescopic rod is fixedly connected to the outer surface of the sliding plate, and one end of the telescopic rod is fixedly connected to the inside of the fixed frame;
the third spring is movably connected to the outer surface of the telescopic rod in a nested manner;
and one end of the second clamping rod is fixedly connected to the outer surface of the sliding plate.
9. An automated harvesting device for offshore contaminant sampling according to claim 8, wherein: and a clamping groove is formed in the placing frame, and the position of the clamping groove corresponds to the position of the second clamping rod.
10. The automated harvesting device for offshore contaminant sampling according to claim 1, wherein: the lower end of the intercepting plate is provided with strip-shaped holes which are distributed on the intercepting plate at equal intervals.
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| CN202110623602.2A CN113447294B (en) | 2021-06-04 | 2021-06-04 | Be applied to automatic harvesting device of marine pollutant sampling |
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| CN202110623602.2A CN113447294B (en) | 2021-06-04 | 2021-06-04 | Be applied to automatic harvesting device of marine pollutant sampling |
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| CN113447294B (en) | 2022-11-08 |
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